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// Copyright (c) 2011, Dr. Masroor Ehsan
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using MaxTrader.Core;

namespace MaxTrader.BusinessObjects
{
    /// <summary>
    ///   Represents some statistics about a position
    /// </summary>
    public sealed class PositionStats
    {
        public PositionStats(Position position)
        {
            Position = position;
        }

        public Position Position { get; private set; }

        public Money AmountBought { get; private set; }

        public Money AmountSold { get; private set; }

        public Money TradeCost { get; private set; }

        public int QuantityBought { get; private set; }

        public int QuantitySold { get; private set; }

        public int TotalOrders { get; private set; }

        public int TotalBuyOrders { get; private set; }

        public int TotalSellOrders { get; private set; }

        public void Calculate()
        {
            //TODO: current currency
            var amountBought = new Money(0m);
            var amountSold = new Money(0m);
            var tradeCost = new Money(0m);
            int buyOrders = 0;
            int sellOrders = 0;
            int totalOrders = 0;
            int qtyBought = 0;
            int qtySold = 0;

            foreach (var tx in Position.Transactions)
            {
                var sum = tx.NumberOfShares*tx.Price;

                if (tx.OrderSide == OrderSide.Buy)
                {
                    buyOrders += 1;
                    amountBought += sum;
                    qtyBought += tx.NumberOfShares;
                }
                else
                {
                    sellOrders += 1;
                    amountSold += sum;
                    qtySold += tx.NumberOfShares;
                }

                totalOrders += tx.NumberOfShares;
                tradeCost += tx.TradeCost;
            }

            AmountBought = amountBought;
            AmountSold = amountSold;
            QuantityBought = qtyBought;
            QuantitySold = qtySold;
            TotalBuyOrders = buyOrders;
            TotalSellOrders = sellOrders;
            TotalOrders = totalOrders;
            TradeCost = tradeCost;
        }
    }
}